Closure arrangement for the planishing opening of horizontal coke oven chambers



Jan. 14, 1958 E. WOLFF 2,820,002

CLOSURE ARRANGEMENT FOR THE PLANISHING OPENING OF HORIZONTAL COKE OVENCHAMBERS Filed Aug. 1, 1951 5 Sheets-Sheet 1 E 55553135012 5J5 3 frmi AOy 3 2 Qua.

Jan. 14, 1958 I E. WOLFF 2,820,002 CLOSURE ARRANGEMENT FOR THEPLANISHING OPENING OF HORIZONTAL COKE OVEN CHAMBERS Filed Aug. 1, 1951 13 Sheets-Sheet 2 J/M/Vme 12.5 24 e er [M35 Ahl/y Jan. 14, 1958 E WOLFF 2820,002

CLOSURE ARRANGEMENT FOR THE PLANISHING OPENING OF HORIZONTAL COKE OVENCHAMBERS Filed Aug. 1, 1951 5 Sheets-Sheet 5 In van/or; Ems! Wolff UitedCLOSURE ARRANGEMENT FOR THE PLAN- ISHING OPENING OF HORIZONTAL COKE OVENCHAMBERS Ernst Wolff, Bochum-Linden, Germany The present inventionrelates to closures for the planishing opening of horizontal coke ovenchambers which are charged with loose coal from the top. When chargingcoal it is known that below the individual charging openings there formcone shaped piles which have to be leveled by means of a planishing rodoperated by a machine. If not the obsolete clay sealing operation wasused, the closures for the planishing opening of the abovementionedovens were sealed by ordinary asbestos gaskets or by iron on iron; inthe last-mentioned instance the surfaces contacting each other weremachined.

Both types of sealing the planishing opening are deficient. The asbestosbecame hard after a relatively short time. Also the life of asbestos israther limited. There fore, asbestos sealings are seldom used nowadays.

A perfect sealing between two iron surfaces fails for the reason thatthe contacting areas do not contact each other at all points thereof,although, as mentioned, they may be machined and may be pressed againsteach other by a latch. Each planishing door warps and dislocates becauseits portions are unevenly heated and therefore expand unevenly. Thoseportions facing the interior of the oven expand more than those portionsremote from the oven. For this reason there will be observed withplanishing doors which usually are rectangularly shaped, that they arebent back at the top and at the bottom. Through the lower gap, tarcondensate which, as is known condensates on the planishing door duringthe coking process, will escape toward the outside, will soil the ovendoor and will make the operation more difiicult. Through the upper gap,depending on the value of the differential pressures, air will enterinto the oven chamber or coking gases will escape toward the outside.

It is, therefore, an object of this invention to provide a closure forthe planishing opening of a horizontal coke oven chamber which willovercome the above-mentioned drawbacks.

It is a further object of this invention to provide aclosure'arrangement for a horizontal coke oven chamber which will beself-sealing.

Still another object of this invention consists in the provision of aclosurearrangement of the type set forth above which will prevent anymaterial accumulation of tar condensate at the closure body, especiallyat the inside of the door for the planishing opening.

It is still another object of this invention to provide a' planishingdoor for the planishing opening of horizontal coke oven chambers inwhich the door for the planishing opening is movable parallel to theframe of said opening.

It is also an object of this invention to provide a planishing door ofthe type referred to in the preceding paragraphs with a fire screenwhich will prevent the transfer of any excessive heat to the planishingdoor so that the latter will be free from, stresses which may be causedby the heat in the oven.

These and other objects 'and advantages of the'inventionwill appear moreclearly from the following specifiotherwise aren't ice cation inconnection with the accompanying drawings in which:

Figure 1 illustrates a view of a planishing door according to a firstembodiment of the present invention.

Figure 2 represents a section along the line ll-II of Figure 1.

Figure 3 is a section along the line III-III of Figure 1.

Figure 4 shows a portion of Figure 2, however at alarger scale than thelatter.

Figure 5 represents a planishing door according to a second embodimentof the present invention.

Figure 6 illustrates a section along the line VI-VI of Figure 5.

Figure 7 is a section along the line VII-VII of Figure 5. v

Figure 8 represents a portion of Figure 7, however on a larger scalethan shown in the latter.

Figure 9 is a section through a closure arrangement of still anotherembodiment of the present invention.

Fig. 10 is a view of another embodiment of a planish-- ing dooraccording to the invention.

Fig. ll is a section along the line 11-11 of Fig. 10.

General arrangement The principle of the invention consists primarily inthat the planishing closure is provided with a metallic" self-sealingarrangement in such a manner that a first sealing means provided at theclosure member and a second sealing means provided at the door framecontact each other when the closure member is in its closing posi-:tion, at least one of said sealing means being yieldable and preferablyadjustable. Such yieldable and adjustable self-sealing may for instancebe obtained by providing a sealing ledge on the closure member whichsealing ledge extends over the entire circumference of said closuremember. This sealing ledge tightly embraces the closure member and ismaintained in its position relative to said closure member by frictionalpressure. When the closure member is in its closing position, thesealing ledge abuts a corresponding sealing surface of the door frame.Warping of the closure member may easily be compensated by driving thesealing ledge forward by means of hammer blows in such a manner that thesealing ledge extending all around and being shaped as a sharp edgecontacts the counter surface at all points. The yieldable and adjustable sealing ledge proper practically does not suffer any temperaturestresses because only a small projection of its surface is subjected toheat influence and the shape" of its cross section compensatesdiflerences in temperature.

The contact of material with metal alone, with the sealing arrangementaccording to the present invention, does, however, not accomplish acomplete gas tight sealing. Such gas tight sealing is obtained only bythe fact that the oven gases cool off at the sealing edge, as a resultof which tar deposits which latter so to speak seals the sealingsurface.

The tar condensates depositing at the door surface itself flowdownwardly on the inner side of the door body and collect above thelower sealing edge. When the door is now opened, it sometimes happensthat larger quantities of tar condensates flow toward the outside.

In order to avoid the last-mentioned drawback, ac-' cording to a furtherfeature of the present invention, the sealing edge at the lower portionof the door, especially at the lower smaller side of the rectangleforming the door opening, is discarded and is replaced by a wide sealingstrip which protrudes beyond the inner edge of" the door frame. Due tothe larger quantities of condensates which are always present at thisportion of the door frame, a linear contact area as is otherwiserequired between the sealing edge and the door frame, is not necessaryat this portion, rather a contact surface may be madeuse-of here." Thesealing strip just mentioned is pref-. erably shaped 'so that it willslope with its upper edge toward the opening of the oven.

The; application ,-of the sealing rarrangement according to thepresenfinvention is based on the provision that ithe use thesealingarrangefment; according to the; present inv t 9na s wi h(odinaryo rs h ngedt ithe framewf the planishing opening, there isaccording to thezpresent inventiQupr-ovided amechanism-which makesayitpossible to move such hinged door parallel to itself so that thedooramayabe latched! in1 the same manner as removable doors. To thisend, there is provided alatch which in the closing {position: ofttheoven door hinged to the door frame catches behind hooks arranged at-thedoor frame in; such ,a manner that by means of inclined surfaces on thehooks and by oval shaped bores in .the-hingesof the door body a-parallelmovementof the door body ;toward the door frame is effected. The saidlatch is in a manner known per se tiltablymounteden me door body. Inordervto relieve thedoorhinge and to enable the condensate floiwingfdownthedoor to return to ithet oven. chamber, I it is advantageous toprovide ratrthewdoor. body :a horizo'ntal foot ledg'e which in theclosirig position of- .the doorrestson a horizontalsuppprtinggsurface,of-fthe frame, That hook which is remote from thatside of the doorl a'tkwhichthe hinges are locatedQ-is" preferablyrigidly connected toithe door frame.- The other hook; however,

maywadvantageously be rigidly connected ,with the-rotatable hinge boltwhich latter by. .means of a coupling pin or'the li e takes part. at theturning-"movement ofthe door body. With thistarrangement, theudoor.opening .can be completely laid open while thehook. adjacent the hingeswill;not. beiobstructivelin. anywayr. In some instances there mightnotbe sufiie ientspace to allow the: hook con-v neeted to fthe. hinge.bolt fully to a swing open: In .order nevertheless to ,makeit possible.to open" thezdoor body to a desired degree, the couplingpin may the.arranged in a cut-.outportion of the. hingeeye of. the door body insuch. a manner-that it is taken alongronly afterthe door has been openedby a predetermined anglec.

In order especially to protect the movable parts of the ddor from the;oven heat, it is knownat .therinner side of the door bodyto provide a.fire screen A .further' development of the present invention concerns aspecial arrangement of such a fire screen for cooperation withand-protection of the planishing door. To thisend the fire screen isarranged so that.it caneasily be exchanged byliftingth e'sarne upwardlywhile being mounted in a dovetaillguiding; arrangement of the doorubody.In this way, the fire screen cam-easily yield to the heat stresses whichmay occur, without conveying ,these stresses to the. door body.

Structural arrangement Referring now to the drawings in detail andFigures 1 to 4 thereof in particular, thestructureshown-thereincomprises-the closure body 1 which is provided rat theoutsidethereofrwith a flange-.2 extending all around.

Mounted-on the flange 2-at even distances there arev threaded--hool s3.- These'threaded hooks yieldably hold arsealing -ledge=4 and clamp thesame against. an adjacent offtrip ded hqo s eju al ss iu 5 p o ru beyondHowever, a special iremo ving l mpet ed eio the c sure ramed a d. isinclin d.

ass-goose wards the latter. The condensates forming on the areasurrounded by the sealing, flow downwardly on the inclined surface ofthe sealing strip 5 and thus return into the oven chamber. The closurebody 1 is threadedly engaged by a bolt 31 which latter carries theclosure lever or latch 32 and is provided with a square head 33. Inorder to close the planishing opening, the planishing closure is liftedby a lifting -device which latter engages theclosure-atth'eear34and-places the closure from above in front of the planishing openinginsuch a manner that the closure latch52 properly,;catches behind thehooks 35 connected to the closure frame 6. If now the bolt 31 byactuating -th'e 'square'head-33 is turned-so that it-moves in a:direfct-ionoutofythegclosure body -1, ,thebolt. wlil move the closuremember lparallel to itself against the closure frame 6,"thereby tightlypressing the sealing edge 4 and the sealing strip 5 against the sealingsurface 7 extending ,alLthe .way around the closure frame 6. Inasmuch as,the sealing edge Anand the sealing strip 5 are: yieldably supported bythe clamping effect, they are'able to adaptthemselves to any unevennessof the sealing surface] which may have: beenbrought about by warping. Inorder to compensatesuchunevenness, it is generally sufiicientto deala-few strong hammer blowsto the outer edge of thesealing ledgeorthesealing strip respectively. lf de sired the clamping. effectexerted bythe threaded hooks iiii mavbeireduced 'by correspondingly loosening thescrew nuts =8'lto the desired extent The upper edge 9 of the closureframe *6 is provided with a sloping surface at .the lower small.side;..which sloping surface slopes downwardly fromtheouter-edge.portion toward the oven: chamber.; This arr-angementwillfacilitate the returnof the formed condensates into the chamberrReferring .now tothe embodimentshown in Figures 5 to 8, the door frame10 is in a manner similar to the arrangement shown inFiguresl to 4inserted into the masonry ofthe oven and .is provided on the outsidethereof with asealing surface llextending all the way around. Alsowiththisembodiment asealing edge 4 and a sealing strip 5 are connectedto the door body 12 by means of threaded screwsJ. A hinge boltv 14 isjournalled in the hinge eyes13 .of the door frame 10. The hinge eyes .13of the door body -.12 are provided With oval bores 16 and surround: orgrip around the hinge bolt 14. The upper hinge eye of the door bodyisprovided with a sector shaped cut-out 17 which is engaged by acoupling pin 18 rigidly connected-to-the,.hinge. bolt 14. Between thehinge. eyes-.13.; of the frame, the bolt 14 is providedwith aslideablebut notrotatably arranged-sleeve 19. Rigidly connected to the sleeve-.19 is a hook 20 with its loop directedupwardl-yr ,One -theother side ofthe door frame and connected therewith: isanotherrhook 21-the loop ofwhich is directed downwardly. Each of the two books is provided at theinner side thereof with a slantarea 22. A latch 23 is tiltablyemountedon the door body 12 and is.. .journalled ion a square head. bolt 24;-This latch is arranged so that in the closingposition-zof thedoor itwill catch behind-the hooks 20 and-.21.-.. The door 'body 121s providedon=the inner sidethereof witha protrud ing part 25Lforminga dovetailshaped guide; 1 The fire; screenld arrangedsomewhat more inwardly isprovided with a corresponding ledge:27 which engages the proe;truding-pant 255-- Furthermore the fire screen is provided with anotchZS-whichmakes it possible, when the door is open; easily to liftthefire screen upwardly'out of the dovetailaguide. Onythe innerside ofthe'door body-12= there is provided a horizontal inclined ledgea29WhiCilg protrudeslinto thQQIBIIiShiDgEQPGHiHg-Slfld is provided withfeetJStLr-esting at; the lower edge of the door frame it):

Whenthedoor isHto be-openemtfirst thewsquare head l l k ttur nedesoythtt e, 1 h=.2 r easedi andi rmeric-out brats-f ushing.p s ti nz-inu chc tengaged hooks 20 and 21.. Aftergthegdoor bodyi-"has now -beensturnedioutwardly by -;a-certain anglejaround the hinge bolt14,:the;free's11rf,a 9 he-e amel? t gagestthezcoupi nga pin 18. If nowthe door body 12 is turned further, the coupling pin 18 will take alongalso the hinge bolt 14 and thus the hook 20. The closing operation ofthe door is effected in the reverse order. During the latching operation the latch slides over the slant surface 22 of the hooks 20 and21 and thus presses the door body 12 parallel to itself against the doorframe whereby the sealing edge 4 and the sealing strip 5 evenly abut thesealing surface 11.

The embodiment shown in Figure 9 differs from the embodiments describedabove in that also the hook 20 is rigidly connected to the door frame 10near the outer side of the hinge. While discarding the possibility ofturning the hook 20, the entire structure is somewhat simplified. Thearrangement of the ledge 29 supports the effect of the slant surface ofthe sealing strip 5 inasmuch as the tar condensate which deposits at thedoor is returned to the oven chamber over the slant surface of the ledge29. This will make sure that the condensates will not escape toward theoutside when the door is being opened.

According to a still further embodiment of the invention, theself-sealing arrangement may be effected by a sealing ledge arranged atthe dor frame and extending over the entire circumference thereof. Whenthe closure body is in its closing position this sealing ledge contactsa corresponding sealing surface of the closure body. Such an arrangementis shown in Figs. 10 and 11 according to which the outside of theclosure frame 6a is provided with a flange 2a extending all the wayaround. Flange 2a carries a plurality of even spaced threadedhook-shaped bolts 3a. These bolts in cooperation with nuts 8a hold asealing ledge composed of a plurality of strips in yieldable andfrictional engagement with the flange 2a. Inserted into the closuremember 1a is a bolt 31a provided with thread and carrying the closureyoke or lever 32a. Bolt 31a is provided with a square head 33a. In orderto close the planishing opening, the closure body In is lifted by itsear 34a and moved in front of the planishing opening in such a mannerthat the lever or yoke 32a firmly enters the hooks 35a carried by theclosure frame 6a. When now the bolt 31a by actuation of the square head31a is screwed out of the body In, the body is moved toward the closureframe as a result of which the sealing surface 7a of the closure body 1ais firmly pressed against the sealing ledge 40 arranged on the closureframe 6a. Inasmuch as the sealing ledge 41: is yieldably andfrictionally clamped against flange 2a, it will be able to adapt itselfsimilar to the embodiments described hereinbefore, to any unevenness ofthe sealing surface 7a which may be caused by warping.

It is, of course, understood that the present invention is, by no means,limited to the particular structural arrangements shown in the drawings,but also comprises any modifications within the scope of the appendedclaims.

What I claim is:

1. A closure arrangement for the planishing opening of horizontal cokeoven chambers, which comprises in combination, a frame confining theplanishing opening including sealing means, a closure member, sealingmeans mounted on said closure member and adapted when said closuremember is placed into closing position for closing said planishingopening to contact the sealing means of said frame, at least one of saidsealing means being metallie and one of said sealing means beingfrictionally held in its respective position, first guiding meansconnected to that side of said closure member which faces said frame, afire screen provided with'second guiding means slidably engaging saidfirst guiding means to be slidably guided thereby, ledge means connectedto the lower side of said closure member and extending below said firescreen so as to support the same, and locking means for pressing saidfirst-mentioned sealing means and said second sealing means tightlyagainst each other while locking said closure member to said frame.

2. An arrangement according to claim 1, in which the fire screen isprovided with notch means on its inner side for engagement with meansfor sliding said fire screen out of said door body.

3. An arrangement according to claim 1, in which said first guidingmeans is formed as a dovetail guide.

References Cited in the file of this patent UNITED STATES PATENTS413,913 Blanchard Oct. 29, 1889 1,466,064 Roberts Aug. 28, 19231,958,305 Kent May 8, 1934 2,007,318 Wilhelm July 9, 1935 2,157,569Potter May 9, 1939 2,275,400 Koppers Mar. 3, 1942 2,698,289 Wolfi Dec.28, 1954 FOREIGN PATENTS 563,287 Germany Nov. 3, 1932 554,550 GermanyJan. 13, 1933 599,100 Germany June 25, 1934 563,285 Germany Feb. 19,1935 675,478 Germany May 9, 1939 600,731 Great Britain Apr. 16, 1948

1. A CLOSURE ARRANGEMENT FOR THE PLANISHING OPENING OF HORIZONTAL COKEOVEN CHAMBERS, WHICH COMPRISES IN COMBINATION, A FRAME CONFINING THEPLANISHING OPENING INCLUDING SEALING MEANS, A CLOSURE MEMBER, SEALINGMEANS MOUNTED ON SAID CLOSURE MEMBER AND ADAPTED WHEN SAID CLOSUREMEMBER IS PLACED INTO CLOSING POSITION FOR CLOSING SAID PLANISHINGOPENING TO CONTACT THE SEALING MEANS OF SAID FRAME, AT LEAST ONE OF SAIDSEALING MEANS BEING METALLIC AND ONE OF SAID SEALING MEANS BEINGFRICTIONALLY HELD IN ITS RESPECTIVE POSITION, FIRST GUIDING MEANSCONNECTED TO THAT SIDE OF SAID CLOSURE MEMBER WHICH FACES SAID FRAME, AFIRE SCREEN PROVIDED WITH SECOND GUIDING MEANS SLIDABLY ENGAGING SAIDFIRST GUIDING MEANS TO BE SLIDABLY GUIDED THEREBY, LEDGE MEANS CONNECTEDTO THE LOWER SIDE OF SAID CLOSURE MEMBER AND EXTENDING BELOW SAID FIRESCREEN SO AS TO SUPPORT THE SAME, AND LOCKING MEANS FOR PRESSING SAIDFIRST-MENTIONED SEALING MEANS AND SAID SECOND SEALING MEANS TIGHTLYAGAINST EACH OTHER WHILE LOCKING SAID CLOSURE MEMBER TO SAID FRAME.